MIT OpenCourseWare is a publication of the course materials that support the dynamic classroom interactions of an MIT education; it is not a degree-granting or credit-bearing initiative. However, you should work through the materials at your own pace, and in whatever manner you desire. NO get a certificatehttp://ocw.mit.edu/index.htm

Learn almost anything for freehttp://www.khanacademy.org/
Take any Udacity class for free!. Below is a list of our current course offerings. All of our courses are open, which means you can sign up any time and complete the course at your own pace without problem set or exam deadlines. You can now get a certificate at any time after a classes’ final has been posted.http://www.udacity.com/courses